Its also a risk factor for many cancer types
Rakipovski G, Rolin B, Nohr J, Klewe I, Frederiksen KS, Augustin R, et al
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Those with Celiac disease, Crohns, or other gut disorders, and those taking drugs to calm heartburn, like omeprazole, have difficulty absorbing B12
See a doctor if you have high B12 and High B12 on a blood test doesnt always require action, but certain combinations warrant prompt evaluation: B12 above 1,000 pg/mL without supplementation or injections Unexplained fatigue, weight loss, abdominal pain, or night sweats alongside elevated B12 Abnormal liver function tests (ALT, AST, bilirubin) or kidney markers (creatinine, GFR) on the same panel Abnormal complete blood count (CBC), especially elevated white blood cells, red blood cells, or platelets B12 levels that are rising over serial measurements without a clear dietary or supplement explanation What to do about high B12 levels There is no specific treatment for high vitamin B12 because the B12 level itself is almost never the problem

While individual results vary, many patients experience: Noticeable weight loss within the first month Reduced appetite and fewer cravings Steady, sustainable fat loss (not just water weight) Increased energy and motivation Patients often report better sleep, more consistent moods, and improved confidencebecause when your body starts feeling better, everything else improves too